Improvement in churns



1. AHEWITT.

Churn.

No. 36,151. Patented Aug. 12,1862.-

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UNITE STATES PArnNr` mica.

vJOHN HEWITT, von cARMIoHAEL, PENNSYLVANIA.

IMPROVEMENT IN CHURNS.

To all whom it may concern.-

Be it known that I, J o'HN HEWITT, of Carmichael, in the county ofGreene and State of Pennsylvania, have invented a new and useful Improvement in Churns; and I do hereby deelare that the following is a full, clear, and exact description ofthe same, reference being had to the accompanying drawings, forming part y of this specification, in which- Figure l is a vertical longitudinal section of my improved churn. Fig. 2 .is a horizontal section of the same. and Fig. 3 is a vertical transverse section of the same; Fig. 4, a broken horizontal section.

Similar letters of reference in the several gures indicate corresponding parts.

The nature of my invention consists in the combination and arrangement of the specified construction of ldasher-blades and the specified construction of the parts which support and allow of the adjustment of the short arm of the dasher-shaft.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

A is a cream tub or box of rectangular or other suitable form. To one endA of the inner side of this box cleats a a are fastened, so as to form a dovetailed way, in which ya dovetailed sliding support, b, is loosely tted. This support has a box, c, formed or cut horizontally in it for the end of the dasher-shaft B to turn in. To the other end of the box, on the A outside, a metal 'bearing-plate, C, is fastened.

This plate has a box, d, for the coupling end D of the dasher-shaft Vto turn in. llt also has a box with an extending hub, e, for the driv-v ing or crank-handle shaft E to turn in. There is a cross-tree, E', framed to this end of the box and provided with metal bearing-boxesf g to receive the ends of the coupling end D of dasher-shaft B and of the driving-shaft E. The coupling end D of the dasher-shaft has a shoulder or an enlargement formed on its inner end, and in the face of this shoulder two coupling-holes, 7L h, are formed, into which couplingpins z i of the dasher-shaft enter and couple the parts B D together, as shown. The outer end or portion of the part D of the dashershaft has a pinion, F,lfastened upon it; but this pinion is made narrow enough to allow the part D to slide horizontally (some distance) into the box A whenever the parts B and D are uncoupled and force is applied to the outer or inner extremities of the part D. The hub e prevents the spur-wheel G and its shaft E from moving in like manner; or it would be better to say that the hub e forms a box for the inner end of the shaft E, and thus throws the spurwheel out from the outer end of the box', and thus the pinion E of the part D of the dashershaft may be set far enough out from the said end of the box to allow the de` sired sliding motion in the said part D of the dasher-shaft.

It is quite an item in churning to keep the point x w clean, and the most ready access to this point is gained by disconnecting the parts. B D of the dasher-shaft and sliding the part D inward far enough to enable the operator to wash off the accumulated mass ofv partiallyblackened cream or butter, such accumulated mass being due to the great friction and the fiowing of lubricating material between the shaft' and the bearings thereof.

The blades H H H2 H3 of the dasher-shaft are curved on their inner and outer'edges and ends, but are flat on their broad surfaces. They are supported out from the shaft by straight pins I I, two blades being set diagonally between each pair of pins, and the diagonal run of one of these blades being across that ofthe other. `There are four blades shown, and the pins of the blades H Hl run at right angles to the pins of the blades H2 H. The blades are so disposed that two of them occupy nearly a horizontal position, while the other two are on nearly a vertical position, also that they stand or lie out from four different sides of the dasher-shaft. With this arrangement the blade H will throw the cream backward, as indicated by the arrow 1, the blade H throw it forward, as indicated by the arrow 2, the blade H2 throw it backward, as indicated by the arrow 3, and the blade H3 throw it forward, as indicated by arrow 4. Thus the currents of cream are forced violentlyinto one another at the central part of the box, and the production of butter consequently facilitated.

It is well known that thorough agitation with sufiicient friction produces butter in a short time, the friction causing the breakage of globules in which Athe fatty matter is contained and the agitation causing the fatty matter to change its character and assume a united solid mass. My churn'performs these operations in the most effectual manner.

Afterthebutterisproduced,thedasher-shaft, with its blades, can be lifted out of the churntub by sliding the dovetailed support in an upward direction. The dasherstaff removed, the part D,Whieh is not lifted with the part B, can be shoved inward and the shoulder at as m cleaned with ease.

What I claim as my invention, and desire to secure by Letters Patent, isi-` The combination and arrangement of the devices Cd e Efg B D z' i b with the blades H H H2 H3 and pins I I, and the churn-box A, all constructed in the manner and for the purpose described.

JOHN HEWI'IT.

Vitnesses:

J AMES MURDocir, WM. HARTMAN. 

